<script>
    layui.define(['table', 'jquery', 'form'], function (exports) {
        "use strict";
        var MOD_NAME = 'tableSelect',
            $ = layui.jquery,
            table = layui.table,
            form = layui.form;
        var tableSelect = function () {
            this.v = '1.1.0';
        };

        /**
         * 初始化表格选择器
         */
        tableSelect.prototype.render = function (opt) {
            var elem = $(opt.elem);
            var tableDone = opt.table.done || function(){};

            //默认设置
            opt.searchKey = opt.searchKey || 'keyword';
            opt.searchPlaceholder = opt.searchPlaceholder || '关键词搜索';
            opt.checkedKey = opt.checkedKey;
            opt.table.page = opt.table.page || true;
            opt.table.height = opt.table.height || 315;

            elem.off('click').on('click', function(e) {
                e.stopPropagation();

                if($('div.tableSelect').length >= 1){
                    return false;
                }

                var t = elem.offset().top + elem.outerHeight()+"px";
                var l = elem.offset().left +"px";
                var tableName = "tableSelect_table_" + new Date().getTime();
                var tableBox = '<div class="tableSelect layui-anim layui-anim-upbit" style="left:'+l+';top:'+t+';border: 1px solid #d2d2d2;background-color: #fff;box-shadow: 0 2px 4px rgba(0,0,0,.12);padding:10px 10px 0 10px;position: absolute;z-index:66666666;margin: 5px 0;border-radius: 2px;min-width:530px;">';
                tableBox += '<div class="tableSelectBar">';
                tableBox += '<form class="layui-form" action="" style="display:inline-block;">';
                tableBox += '<input style="display:inline-block;width:190px;height:30px;vertical-align:middle;margin-right:-1px;border: 1px solid #C9C9C9;" type="text" name="'+opt.searchKey+'" placeholder="'+opt.searchPlaceholder+'" autocomplete="off" class="layui-input"><button class="layui-btn layui-btn-sm layui-btn-primary tableSelect_btn_search" lay-submit lay-filter="tableSelect_btn_search"><i class="layui-icon layui-icon-search"></i></button>';
                tableBox += '</form>';
                tableBox += '<button style="float:right;" class="layui-btn layui-btn-sm tableSelect_btn_select">选择<span></span></button>';
                tableBox += '</div>';
                tableBox += '<table id="'+tableName+'" lay-filter="'+tableName+'"></table>';
                tableBox += '</div>';
                tableBox = $(tableBox);
                $('body').append(tableBox);

                //数据缓存
                var checkedData = [];

                //渲染TABLE
                opt.table.elem = "#"+tableName;
                opt.table.id = tableName;
                opt.table.done = function(res, curr, count){
                    defaultChecked(res, curr, count);
                    setChecked(res, curr, count);
                    tableDone(res, curr, count);
                };
                var tableSelect_table = table.render(opt.table);

                //分页选中保存数组
                table.on('radio('+tableName+')', function(obj){
                    if(opt.checkedKey){
                        checkedData = table.checkStatus(tableName).data
                    }
                    updataButton(table.checkStatus(tableName).data.length)
                })
                table.on('checkbox('+tableName+')', function(obj){
                    if(opt.checkedKey){
                        if(obj.checked){
                            for (var i=0;i<table.checkStatus(tableName).data.length;i++){
                                checkedData.push(table.checkStatus(tableName).data[i])
                            }
                        }else{
                            if(obj.type=='all'){
                                for (var j=0;j<table.cache[tableName].length;j++) {
                                    for (var i=0;i<checkedData.length;i++){
                                        if(checkedData[i][opt.checkedKey] == table.cache[tableName][j][opt.checkedKey]){
                                            checkedData.splice(i,1)
                                        }
                                    }
                                }
                            }else{
                                //因为LAYUI问题，操作到变化全选状态时获取到的obj为空，这里用函数获取未选中的项。
                                function nu (){
                                    var noCheckedKey = '';
                                    for (var i=0;i<table.cache[tableName].length;i++){
                                        if(!table.cache[tableName][i].LAY_CHECKED){
                                            noCheckedKey = table.cache[tableName][i][opt.checkedKey];
                                        }
                                    }
                                    return noCheckedKey
                                }
                                var noCheckedKey = obj.data[opt.checkedKey] || nu();
                                for (var i=0;i<checkedData.length;i++){
                                    if(checkedData[i][opt.checkedKey] == noCheckedKey){
                                        checkedData.splice(i,1);
                                    }
                                }
                            }
                        }
                        checkedData = uniqueObjArray(checkedData, opt.checkedKey);
                        updataButton(checkedData.length)
                    }else{
                        updataButton(table.checkStatus(tableName).data.length)
                    }
                });

                //渲染表格后选中
                function setChecked (res, curr, count) {
                    for(var i=0;i<res.data.length;i++){
                        for (var j=0;j<checkedData.length;j++) {
                            if(res.data[i][opt.checkedKey] == checkedData[j][opt.checkedKey]){
                                res.data[i].LAY_CHECKED = true;
                                var index= res.data[i]['LAY_TABLE_INDEX'];
                                var checkbox = $('#'+tableName+'').next().find('tr[data-index=' + index + '] input[type="checkbox"]');
                                checkbox.prop('checked', true).next().addClass('layui-form-checked');
                                var radio  = $('#'+tableName+'').next().find('tr[data-index=' + index + '] input[type="radio"]');
                                radio.prop('checked', true).next().addClass('layui-form-radioed').find("i").html('&#xe643;');
                            }
                        }
                    }
                    var checkStatus = table.checkStatus(tableName);
                    if(checkStatus.isAll){
                        $('#'+tableName+'').next().find('.layui-table-header th[data-field="0"] input[type="checkbox"]').prop('checked', true);
                        $('#'+tableName+'').next().find('.layui-table-header th[data-field="0"] input[type="checkbox"]').next().addClass('layui-form-checked');
                    }
                    updataButton(checkedData.length)
                }

                //写入默认选中值(puash checkedData)
                function defaultChecked (res, curr, count){
                    if(opt.checkedKey && elem.attr('ts-selected')){
                        var selected = elem.attr('ts-selected').split(",");
                        for(var i=0;i<res.data.length;i++){
                            for(var j=0;j<selected.length;j++){
                                if(res.data[i][opt.checkedKey] == selected[j]){
                                    checkedData.push(res.data[i])
                                }
                            }
                        }
                        checkedData = uniqueObjArray(checkedData, opt.checkedKey);
                    }
                }

                //更新选中数量
                function updataButton (n) {
                    tableBox.find('.tableSelect_btn_select span').html(n==0?'':'('+n+')')
                }

                //数组去重
                function uniqueObjArray(arr, type){
                    var newArr = [];
                    var tArr = [];
                    if(arr.length == 0){
                        return arr;
                    }else{
                        if(type){
                            for(var i=0;i<arr.length;i++){
                                if(!tArr[arr[i][type]]){
                                    newArr.push(arr[i]);
                                    tArr[arr[i][type]] = true;
                                }
                            }
                            return newArr;
                        }else{
                            for(var i=0;i<arr.length;i++){
                                if(!tArr[arr[i]]){
                                    newArr.push(arr[i]);
                                    tArr[arr[i]] = true;
                                }
                            }
                            return newArr;
                        }
                    }
                }

                //FIX位置
                var overHeight = (elem.offset().top + elem.outerHeight() + tableBox.outerHeight() - $(window).scrollTop()) > $(window).height();
                var overWidth = (elem.offset().left + tableBox.outerWidth()) > $(window).width();
                overHeight && tableBox.css({'top':'auto','bottom':'0px'});
                overWidth && tableBox.css({'left':'auto','right':'5px'})

                //关键词搜索
                form.on('submit(tableSelect_btn_search)', function(data){
                    tableSelect_table.reload({
                        where: data.field,
                        page: {
                            curr: 1
                        }
                    });
                    return false;
                });

                //双击行选中
                table.on('rowDouble('+tableName+')', function(obj){
                    var checkStatus = {data:[obj.data]};
                    selectDone(checkStatus);
                })

                //按钮选中
                tableBox.find('.tableSelect_btn_select').on('click', function() {
                    var checkStatus = table.checkStatus(tableName);
                    if(checkedData.length > 1){
                        checkStatus.data = checkedData;
                    }
                    selectDone(checkStatus);
                })

                //写值回调和关闭
                function selectDone (checkStatus){
                    if(opt.checkedKey){
                        var selected = [];
                        for(var i=0;i<checkStatus.data.length;i++){
                            selected.push(checkStatus.data[i][opt.checkedKey])
                        }
                        elem.attr("ts-selected",selected.join(","));
                    }
                    opt.done(elem, checkStatus);
                    tableBox.remove();
                    delete table.cache[tableName];
                    checkedData = [];
                }

                //点击其他区域关闭
                $(document).mouseup(function(e){
                    var userSet_con = $(''+opt.elem+',.tableSelect');
                    if(!userSet_con.is(e.target) && userSet_con.has(e.target).length === 0){
                        tableBox.remove();
                        delete table.cache[tableName];
                        checkedData = [];
                    }
                });
            })
        }

        /**
         * 隐藏选择器
         */
        tableSelect.prototype.hide = function (opt) {
            $('.tableSelect').remove();
        }

        //自动完成渲染
        var tableSelect = new tableSelect();

        //FIX 滚动时错位
        if(window.top == window.self){
            $(window).scroll(function () {
                tableSelect.hide();
            });
        }
        exports(MOD_NAME, tableSelect);
    })
</script>
